From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vinod Koul Subject: Re: [PATCH 0/4] dmaengine: qcom: bam_dma: fixes for remotely controlled bam Date: Wed, 17 Jan 2018 15:48:35 +0530 Message-ID: <20180117101835.GM18649@localhost> References: <20180116190236.14558-1-srinivas.kandagatla@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20180116190236.14558-1-srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org Cc: Andy Gross , dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Rob Herring , Mark Rutland , David Brown , Dan Williams , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, yanhe-jfJNa2p1gH1BDgjK7y7TUQ@public.gmane.org, ramkri-Rm6X0d1/PG5y9aJCnZT0Uw@public.gmane.org, sdharia-jfJNa2p1gH1BDgjK7y7TUQ@public.gmane.org List-Id: devicetree@vger.kernel.org On Tue, Jan 16, 2018 at 07:02:32PM +0000, srinivas.kandagatla-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org wrote: > From: Srinivas Kandagatla > > Hi Andy, > > I did hit few issues while trying out SLIMBus BAM on DB820c, this BAM instance > is remotely controlled and powered up after ADSP is booted using QMI commands. What do you mean by "remotely controlled" in this series? > > Firstly some of the master registers are written even when the BAM is remotely > controlled, and secondly reading registers when bam is not ready yet. > > These 4 patches address these issues, there are few more issues like doing PM > in simillar usecase, these will be addressed soon. > > Thanks, > Srini > > Srinivas Kandagatla (4): > dmaengine: qcom: bam_dma: make bam clk optional > dmaengine: qcom: bam_dma: add num-channels binding for remotely > controlled > dmaengine: qcom: bam_dma: do not write to global regs in remote mode > dmaengine: qcom: bam_dma: Add num-ees dt binding for remotely > controlled > > .../devicetree/bindings/dma/qcom_bam_dma.txt | 4 ++ > drivers/dma/qcom/bam_dma.c | 56 +++++++++++++++------- > 2 files changed, 43 insertions(+), 17 deletions(-) > > -- > 2.15.1 > -- ~Vinod -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html